CN105416521B - Platform moon pool damping device - Google Patents
Platform moon pool damping device Download PDFInfo
- Publication number
- CN105416521B CN105416521B CN201510920840.4A CN201510920840A CN105416521B CN 105416521 B CN105416521 B CN 105416521B CN 201510920840 A CN201510920840 A CN 201510920840A CN 105416521 B CN105416521 B CN 105416521B
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- China
- Prior art keywords
- cabin
- moon pool
- wall
- horizontal
- platform
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
Abstract
The invention discloses a kind of platform moon pool damping device, cabin is shaken with subtracting including the vibration damping cabin that is arranged on moon pool two ends transverse inner wall and separates by watertight dividing plate, wall shakes the cabin bottom outer wall horizontal damping block that is interspersed of number row respectively with subtracting to vibration damping out of my cabin, subtract rolling cabin bottom outer wall and the unrestrained post of several gears is set, subtract three layers of dividing plate setting up and down in rolling cabin, the vertical Wave-dissipating block that dividing plate upper and lower sides and the horizontal several row of horizontal of bilge inwall are interspersed, dividing plate sets corresponding wedge type block up and down towards the outer end of platform moon pool.The vibration damping in vibration damping cabin is respectively equipped with several rectangular apertures on wall and vertical wallboard out of my cabin, the vertical horizontal Wave-dissipating blocks being interspersed of horizontal number row on moon pool longitudinal direction two ends inwall and vertical wallboard.Vibration damping cabin of the invention can guarantee that the work of platform safety and stability under different operating modes from rolling cabin is subtracted.Subtract and shake the impact that the unrestrained post of gear that cabin bottom outer wall sets effectively can keep out to flow, weaken the kinetic energy of wave, induction flows to moon pool bottom motion, reduces the formation of whirlpool in moon pool.
Description
Technical field
The present invention relates to a kind of device for reducing ocean engineering structure drag effects, more particularly to a kind of reduction drilling well is put down
Platform moon pool under different operating modes liquid level vibration, rock device with whirlpool, belong to Naval Architecture and Ocean Engineering technical field.
Background technology
Increase in demand with the mankind to the petroleum gas energy, the exploitation of land resources can not meet existing stone
Oil supply, offshore oil exploration and exploitation are very urgent, and various new marine settings are continued to bring out under the new situation herein, drilling well
Ship and all kinds of drilling platforms also in constantly development and are reformed as the main product of offshore drilling equipment.Moon pool, as sea
The essential structure type of drilling platforms, is normally at platform middle part, and its structure is passing through up and down from the straight-through bottom of train wheel bridge
The vertical channel of logical platform, drilling equipment and pipeline carry out mud oil through vertical channel.Due to mesa base moon pool inwall
Flow directly contact with wave, the whirlpool that moon pool front end produces is conveyed to the back-end, encounter hindered during moon pool rear wall, be returned to
Inside moon pool, fluid in moon pool is caused to roll, moon pool rear wall is larger compared with the pressure of antetheca, so as to produce resistance；Simultaneously in stormy waves
In the presence of stream, free surface can be formed along upper and lower " piston " motion of moon pool depth direction and " shaking for horizontal direction in moon pool
Swing " motion, moon pool inwall and deck are impacted, so that main platform body athletic posture in the seawater is influenceed, to sea
Work and rest environment cause to have a strong impact on.
At present, it is general using additional in moon pool inwall or bottom addition in order to tackle the adverse effect produced by moon pool
Thing and portable plate to be opened/closed is set up in moon pool, these measures can mitigate some resistance to a certain extent, but due to
Need to tackle the drag effects under different operating modes when platform at sea works, existing technical scheme can not fully meet moon pool
The requirement of structure drag reduction, and for movable opening-closing plate, the general motion using hydraulic cylinder push-pull fashion drive plate, liquid
Pressure cylinder apparatus easily receive immersion corrosion in seawater, increased seal requirement while also bringing operational inconvenience.
For platform structure, during towage, due to flowing first at the forward position of moon pool generation whirlpool, this whirlpool by
Gradually develop, and moved along place towards the rear of moon pool, when at edge after reaching moon pool, it will form one and occupy in moon pool
The big whirlpool in portion major part space, the forward position of moon pool continues to produce whirlpool afterwards, and constantly repeats this process, forms whirlpool anti-
Should；Simultaneously because shallower draft, liquid level is relatively low in moon pool, with direction of motion side antetheca apparently higher than rear wall, easily
The effect of rocking of horizontal direction is produced in moon pool；And in platform operations, drinking water increases, liquid level increases in moon pool, easily
Upper and lower oscillating movement is being produced along moon pool depth direction.With liquid level form of the platform in moon pool under different conditions, design
A kind of can reduction is rocked with vibration and can contain that the moon pool structure of whirlpool is just particularly important.
The content of the invention
It is an object of the invention to provide one kind can effectively suppress horizontal direction in moon pool rock with vertical direction vibration, make
Whirlpool forms and minimizes, alleviates seawater to platform impact, it is ensured that the device of platform normal table work under various operating modes.
In order to achieve the above object, the technical solution adopted in the present invention is：
A kind of platform moon pool damping device, the platform moon pool is arranged on platform middle part, and its longitudinal direction is longitudinally flat with platform
OK；Shake cabin with subtracting including the vibration damping cabin that is arranged on moon pool two ends transverse inner wall and is arranged vertically up and down, the vibration damping cabin with subtract rolling
Separated by watertight dividing plate between cabin；Wall shakes the horizontal damping that is interspersed of number row respectively of cabin bottom outer wall with subtracting to vibration damping out of my cabin
Block, subtracts and shakes cabin bottom outer wall and be fixedly connected several wide gear wave posts with moon pool, subtracts rolling cabin bottom and is provided with perpendicular outer wall, middle part with
On do not set perpendicular outer wall, subtract rolling cabin in three layers of dividing plate setting up and down, dividing plate upper and lower sides and bilge inwall it is horizontal number row be interspersed
Vertical Wave-dissipating block, dividing plate towards platform moon pool outer end set up and down corresponding wedge type block；Set each other in the cabin of vibration damping cabin
The horizontal baffle and vertical wallboard being fixedly connected, the vibration damping are respectively equipped with several parallel to moon pool on wall and vertical wallboard out of my cabin
The rectangular aperture of width, the vertical horizontal wave absorptions being interspersed of horizontal number row on moon pool inwall and vertical wallboard in vibration damping cabin
Block.
The purpose of the present invention can also further be realized by following technical measures.
Foregoing platform moon pool damping device, wherein the spacing a=0.5m~1m of the horizontal Wave-dissipating block, horizontal Wave-dissipating block
The ratio between inclined-plane inclined angle alpha=10 °~30 °, side b long and short side c b：C=1.5~3.
Foregoing platform moon pool damping device, wherein the section form of the unrestrained post of the gear is semicircle, three unrestrained column radius of gear
Successively decrease, interval it is uniform it is horizontal shake cabin bottom outer wall subtracting, the ratio between three radiuses of the unrestrained post of gear radius R1：R2：R3=5：3：1.
Foregoing platform moon pool damping device, wherein the damping block is outer small interior big bucket shape damping block, subtracts rolling out of my cabin
Wall and the vibration damping cabin bottom outer wall bucket shape damping block that horizontal four row self is interspersed altogether up and down, the transverse direction of bucket shape damping block
Distance s=0.2m~0.6m, the upper and lower surface of bucket shape damping block is square, side ratio m：N=2：1.
Foregoing platform moon pool damping device, wherein wedge angle β=45 °~75 ° of the wedge type block.
Simple structure of the present invention, in moon pool transverse inner wall set vibration damping cabin with subtract shake cabin, it is ensured that platform is in different works
The work of safety and stability under condition.Subtract and shake the gear wave post that cabin bottom outer wall is uniformly arranged, the impact that effectively can keep out to flow weakens
The kinetic energy of wave, induces to flow to moon pool bottom motion, reduces the formation of whirlpool in moon pool.Subtract and shake wall out of my cabin and vibration damping wall out of my cabin
On bucket shape damping block, can reduce the viscous effect of inwall upper fluid and Gu Bi, reduce viscous drag, while alternating expression point
Cloth can further contain that whirlpool reacts.During platform towage operating mode, moon pool interior draft is shallower, liquid level subtract shake cabin region,
Subtract to shake and be horizontally staggered the Wave-dissipating block of arrangement in cabin and can effectively stop that seawater does front-rear reciprocation movement in moon pool, so as to reduce the moon
The effect of rocking in pond；During platform operations, main platform body declines, and drinking water increases, and liquid level subtracts in vibration damping cabin region in moon pool
Shaking the Wave-dissipating block of vertical interlaced arrangement in cabin can effectively stop that seawater does upper and lower telescopic oscillating movement in moon pool.
Advantages of the present invention and feature, will be for illustration and explanation by the non-limitative illustration of preferred embodiment below.
Brief description of the drawings：
Fig. 1 is the structural representation of combined type moon pool damping device of the present invention；
Fig. 2 is the top view of combined type moon pool damping device；
Fig. 3 is partial views of the Fig. 1 at A；
Fig. 4 is I enlarged drawing of Fig. 1；
Fig. 5 is II stereo amplification figure of Fig. 1；
Fig. 6 is III stereo amplification figure of Fig. 1；
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Fig. 1~Fig. 6, the present embodiment includes being arranged on moon pool two ends transverse inner wall 10 and subtracting of being arranged vertically up and down
Shake cabin 1 with subtract shake cabin 2, vibration damping cabin 1 and subtract rolling cabin 2 between separated by watertight dividing plate 3.Vibration damping out of my cabin wall 11 with subtract shake cabin bottom
The damping block 4 that horizontal number row is interspersed respectively of outer wall 21, subtracts rolling cabin bottom outer wall 21 and is fixedly connected 4 gears wide with moon pool
Unrestrained post 5, to subtract and more than rolling cabin middle part do not set perpendicular outer wall, subtracts three layers of dividing plate 22 setting up and down, the upper and lower sides of dividing plate 22 and cabin in rolling cabin 2
The vertical Wave-dissipating block 6 that the horizontal 8 row of horizontal direction of bottom inwall 23 is interspersed, reduces the front and rear rolling of moon pool maritime interior waters horizontal direction
Swing, effectively stop front-rear reciprocation movement of the seawater in moon pool, so as to reduce the effect of rocking in moon pool.Dividing plate 22 is towards platform
The outer end of moon pool sets corresponding wedge type block 7 up and down.Setting is fixedly connected in the cabin of vibration damping cabin 1 horizontal baffle 12 and vertical wallboard
13, vibration damping is respectively equipped with several rectangular apertures 131 parallel to moon pool width on wall 11 and vertical wallboard 13 out of my cabin, sea
Water enters in vibration damping cabin 1 from rectangular aperture 131, by the drag reduction effect of horizontal Wave-dissipating block 8 in cabin.Moon pool inwall in vibration damping cabin 1
10 and vertical wallboard 13 on the vertical horizontal Wave-dissipating blocks 8 being interspersed of horizontal number row, the vertical vibration of moon pool maritime interior waters can be reduced,
Effectively stop the flexible up and down oscillating movement in moon pool of seawater.
As shown in Figure 4 and Figure 5, the spacing a=0.5m~1m of horizontal Wave-dissipating block 8, the inclined-plane inclined angle alpha of horizontal Wave-dissipating block 8=
10 °~30 °, the ratio between side b long and short side c b：C=1.5~3.
As shown in figure 1, the section form of the unrestrained post 5 of gear is semicircle, three decreasing radius of the unrestrained post 5 of gear, interval is uniform horizontal
Cabin bottom outer wall 21 is shaken subtracting, the ratio between three radiuses of the unrestrained post 5 of gear R1：R2：R3=5：3：1.Rushing for wave can effectively be weakened
Hit, reduce kinetic energy of wave.
As shown in fig. 6, wedge angle β=45 °~75 ° of wedge type block 7, can play cushioning effect to wave, it is right to extenuate
The impact of Wave-dissipating block in cabin；
As shown in figure 5, damping block 4 is outer small interior big bucket shape damping block.Subtract rolling wall 11 and vibration damping cabin bottom outer wall out of my cabin
About the 21 bucket shape damping blocks that self are interspersed of horizontal four rows altogether, the horizontal spacing s=0.2m of bucket shape damping block~
0.6m, the upper and lower surface of bucket shape damping block is square, side ratio m：N=2：1.The formation of whirlpool can effectively be contained simultaneously
Reduce moon pool in viscous drag, prevent wave climb reduction wave overflow to up on platform deck 9.
During platform towage, moon pool interior draft is shallower, and liquid level is subtracting rolling cabin region, subtracts in rolling cabin 2 and is horizontally staggered arrangement
Vertical Wave-dissipating block 5 can effectively stop front-rear reciprocation movement of the seawater in moon pool, so as to reduce the effect of rocking in moon pool；
During platform operations, main platform body declines, and drinking water increases, and liquid level subtracts vertical friendship in rolling cabin 2 in the region of vibration damping cabin 1 in moon pool
The horizontal Wave-dissipating block 7 of mistake arrangement can effectively stop that seawater does upper and lower telescopic oscillating movement in moon pool.
In addition to the implementation, the present invention can also have other embodiment, all use equivalents or equivalent transformation shape
Into technical scheme, all fall within the protection domain of application claims.
Claims (5)
1. a kind of platform moon pool damping device, the platform moon pool is arranged on platform middle part, and its longitudinal direction is parallel longitudinal with platform；
It is characterized in that, including it is arranged on moon pool two ends transverse inner wall and cabin, the vibration damping cabin are shaken with subtracting in the vibration damping cabin that is arranged vertically up and down
With subtract shake cabin between separated by watertight dividing plate；Wall shakes cabin bottom outer wall horizontal number row is interspersed respectively with subtracting vibration damping out of my cabin
Damping block, subtracts rolling cabin bottom outer wall and is fixedly connected several gear wave posts wide with moon pool, subtracts rolling cabin bottom and is provided with perpendicular outer wall,
Perpendicular outer wall more than middle part is not set, subtracts three layers of dividing plate setting up and down, dividing plate upper and lower sides and the horizontal several drainings of bilge inwall in rolling cabin
Square to the vertical Wave-dissipating block being interspersed, dividing plate sets corresponding wedge type block up and down towards the outer end of platform moon pool；Vibration damping
The horizontal baffle and vertical wallboard that are fixedly secured to one another of setting in the cabin of cabin, the vibration damping are respectively equipped with wall and vertical wallboard out of my cabin
, parallel to the rectangular aperture of moon pool width, horizontal number row is vertical staggeredly on moon pool inwall and vertical wallboard in vibration damping cabin for several
The horizontal Wave-dissipating block of distribution.
2. platform moon pool damping device as claimed in claim 1, it is characterized in that, the spacing a=0.5m of the horizontal Wave-dissipating block ~
The ratio between 1m, horizontal Wave-dissipating block inclined-plane inclined angle alpha=10 ° ~ 30 °, side b long and short side c b：c=1.5~3.
3. platform moon pool damping device as claimed in claim 1, it is characterized in that, the section form of the unrestrained post of gear is semicircle,
Three decreasing radius of the unrestrained post of gear, interval it is uniform it is horizontal shake cabin bottom outer wall subtracting, the ratio between three radiuses of the unrestrained post of gear R1：R2：
R3=5：3：1.
4. platform moon pool damping device as claimed in claim 1, it is characterized in that, the damping block is outer small interior big bucket shape resistance
Buddhist nun's block, subtracts and shakes wall out of my cabin and the vibration damping cabin bottom outer wall bucket shape damping block that horizontal four row self is interspersed altogether up and down, bucket
Horizontal spacing s=0.2m ~ the 0.6m of shape damping block, the upper and lower surface of bucket shape damping block is square, side ratio m：n=2：1.
5. platform moon pool damping device as claimed in claim 1, it is characterized in that, wedge angle β=45 ° of the wedge type block ~
75°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510920840.4A CN105416521B (en) | 2015-12-14 | 2015-12-14 | Platform moon pool damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510920840.4A CN105416521B (en) | 2015-12-14 | 2015-12-14 | Platform moon pool damping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105416521A CN105416521A (en) | 2016-03-23 |
| CN105416521B true CN105416521B (en) | 2017-06-23 |
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ID=55495163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510920840.4A Expired - Fee Related CN105416521B (en) | 2015-12-14 | 2015-12-14 | Platform moon pool damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105416521B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106828782B (en) * | 2017-01-11 | 2019-01-29 | 中国海洋大学 | The tension type anchor leg floating drum of single-point unloading system |
| CN108502097B (en) * | 2018-05-24 | 2023-06-30 | 江苏科技大学 | Moon pool baffle device capable of being opened and closed |
| CN112193359A (en) * | 2020-09-16 | 2021-01-08 | 上海交通大学 | Novel moon pool anti-rolling wave-absorbing wall |
| CN114934967A (en) * | 2022-05-17 | 2022-08-23 | 广东省科学院智能制造研究所 | Air spring vibration damper and application thereof |
Citations (7)
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|---|---|---|---|---|
| CN101331054A (en) * | 2006-05-11 | 2008-12-24 | 三星重工业株式会社 | Anti-sloshing device in moon pool |
| KR20100028307A (en) * | 2008-09-04 | 2010-03-12 | 대우조선해양 주식회사 | Moonpool having anti-flow device |
| KR20110029693A (en) * | 2009-09-16 | 2011-03-23 | 대우조선해양 주식회사 | Apparatus for controlling resistance of a moon pool |
| KR20110058187A (en) * | 2009-11-26 | 2011-06-01 | 삼성중공업 주식회사 | Structure for resistor reduction of drillship moonpool |
| CN102438885A (en) * | 2010-02-12 | 2012-05-02 | 大宇造船海洋株式会社 | Resistance-reducing device for a moon pool |
| CN105015698A (en) * | 2015-08-06 | 2015-11-04 | 哈尔滨工程大学 | Damping device for interior of moon pool of drilling ship |
| CN205589429U (en) * | 2015-12-14 | 2016-09-21 | 江苏科技大学 | Platform moon pool fairing |
-
2015
- 2015-12-14 CN CN201510920840.4A patent/CN105416521B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101331054A (en) * | 2006-05-11 | 2008-12-24 | 三星重工业株式会社 | Anti-sloshing device in moon pool |
| KR20100028307A (en) * | 2008-09-04 | 2010-03-12 | 대우조선해양 주식회사 | Moonpool having anti-flow device |
| KR20110029693A (en) * | 2009-09-16 | 2011-03-23 | 대우조선해양 주식회사 | Apparatus for controlling resistance of a moon pool |
| KR20110058187A (en) * | 2009-11-26 | 2011-06-01 | 삼성중공업 주식회사 | Structure for resistor reduction of drillship moonpool |
| CN102438885A (en) * | 2010-02-12 | 2012-05-02 | 大宇造船海洋株式会社 | Resistance-reducing device for a moon pool |
| CN105015698A (en) * | 2015-08-06 | 2015-11-04 | 哈尔滨工程大学 | Damping device for interior of moon pool of drilling ship |
| CN205589429U (en) * | 2015-12-14 | 2016-09-21 | 江苏科技大学 | Platform moon pool fairing |
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| Publication number | Publication date |
|---|---|
| CN105416521A (en) | 2016-03-23 |
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